The profiler worker's per-observation publish now re-merges
attacker_uuid into the bus payload alongside id/ts/v. Same shape as
the existing DECNET-side deviation from BEHAVE's wire-format
docstring (BEHAVE-INTEGRATION.md §339-366) — widens the deviation
by one DECNET denorm field.
Phase 5's per-attacker SSE route can now filter
attacker.observation.* events to one attacker in O(1) without a repo
round-trip per event. identity_ref stays None today (until the
attribution engine ships); attacker_uuid is independent.
Two test changes:
* test_happy_path_persists_and_publishes asserts attacker_uuid is in
every published payload.
* New test_attacker_uuid_in_payload_for_filter pins the field
explicitly and confirms it doesn't conflate with identity_ref.